When comparing 6x13 fixed vs Sudo, the Slant community recommends 6x13 fixed for most people. In the question“What are the best programming fonts?”6x13 fixed is ranked 22nd while Sudo is ranked 85th. The most important reason people chose 6x13 fixed is:

6x13 fixed is the apex of bitmap fonts. It has a nice, defined character set and great proportions for quantity of text onscreen, making for excellent readability. It is aesthetically pleasing for a bitmap font and has been deservedly termed 'classic'.

Specs

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Pros

Pro

Well designed

6x13 fixed is the apex of bitmap fonts. It has a nice, defined character set and great proportions for quantity of text onscreen, making for excellent readability. It is aesthetically pleasing for a bitmap font and has been deservedly termed 'classic'.

Pro

Legible at small sizes

At a small text size, each character has a limited resolution. A character size of 6x13 pixels means only 78 pixels per character. Modern fonts are designed to be scalable and are less legible at these small sizes. Using bitmap fonts increases legibility by eliminating scaling and sub-pixel aliasing artifacts. Some scalable fonts include "ppems" embedded bitmaps for this reason.

Pro

Available on every X server

6x13 is the classic fixed monospace bitmap font that is expected to be available on every X server. It is part of the misc-fixed family. These fonts were handcrafted for readability in a terminal.

Pro

Widely available

It is distributed alongside the X Window System.

Pro

Four styles available

Sudo has Regular, Italic, Bold, and Bold Italic styles available.

Pro

Works well on Windows

Sudo is hand-hinted for good rendering on Windows.

Pro

Good legibility

Different character categories are differentiated by height and alignment. Numbers are a line width smaller than capital letters, so there is no need for a dotted or slashed zero.

Cons

Con

Doesn't have a slashed zero

The absence of non-slashed zeroes makes it harder to distinguish "0" from the letter "O".

Con

Extremely small on high-DPI screens

While it is crafted for a screen where the pixels are visible, bitmap fonts do not work well on high-DPI screens as they do not scale too well.

Con

Zero is not slashed or dotted

This makes for difficulty in distinguishing similar looking characters, such as the capital "O".